Apparatus for multiplying records



Nov. 27, 1934. A, osi-:R

APPARATUS FOR MULTIPLYING REORDS A 2 sheets-sheetl Filed NOV. 18, 1931 I Fg.1

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Nov. 27, 1934. A. osER 1,982,017

APPARATUS FOR MULTIPLYING RECORDS Filed Nov. 18, 1931 2 sheets-'sheet 2 Patented Nov. 27, 1934 UNITED STATES PATENT OFFICE Application November 18, 1931, Serial No. 575,842

' In Austria January 2, 1931 Claims.

'I'his invention relates to apparatus for multiplying writings, drawings or the like made on a sheet of paper or the like in reverse and particularly to apparatus wherein the moistened copy i sheet is drawn through a pair of rollers, the original sheet being fastened around one of these rollers.

One object of the invention is to increase the reliability of operation of the apparatus.

Another object of the invention is to simplify and improve the eiciency of the device for moistening the copy sheet.

Another object of the invention is to facilitate the insertion of the original sheet and to prevent 15 it from being damaged during the operation of the device.

Another advantage of the invention is that creasing of the copy sheet is made impossible.

Further objects and features of the invention will be set forth with reference to the annexed' drawings, in which a copying apparatus is illustrated by way of example. Fig. 1 thereof is a plan view and Fig. 2 an elevation partly sectional. Fig. 3 shows the position ofthe parts during the operation of inserting a new copy sheet and Fig. 4

the position of the parts for inserting and securing the original sheet.

When the apparatus is ready for copying, the original sheet 1 is located around the lower roller (cylinder) 2 with the reverse or mirror writing outside and its front edge 1' is maintained in proper position on the cylinder by means of a thin resilient strip 4 of metal provided with slits 3 which enable the operator to see whether the front edge of the original sheet is in correct position, that is to say parallel to the axis of the cylinder. The strip 4 can turn around the pivot 5. A lever 6 is secured to strip 4, so that the strip 4 can be moved out of contact with the exterior of the cylinder, against the action of a spring 7. The bearings 9 of the top roller 8 are mounted to slide vertically and said bearings are connected by means of Vertical rods 10 to cranks 12 which are connected to the shaft 11, the lower ends of said .rods being pivotally connected to the ends of the cranks. A lever 13 is also secured to the shaft -11 and engages at its Quter end with the underside of an eccentric 14, the langular'position of which can be changed by means of a handle 15 50 for the purpose of adjusting therebythe pressure of the top roller 8 against the cylmder 2. The lever 13 is rather thin in the transversal (horizontal) direction, so that it can slightly be bent in the direction of the arrow which is shown in 55, the lower left hand corner of Fig. 1. Said lever 13 (Cl. IDI-132) is thus brought out of engagement with the eccentric 14, when the top roller 8 is to be raised for inserting the original sheet.

The moistening member is stationary and consists preferably of two or more layers. The lowest layer is a band or sheet 16 of absorbent material, which band acts like a wick and said sheet 16 is supported by a bracket plate 17 which is secured to the frame of the apparatus. The free end of the wick is immersed in alcohol or in a similar quick-drying liquid contained in the receptacle 18. In order to maintain the level of the liquid in the receptacle 18 substantially constant, the latter may be so adapted that it can be xed at different heights or else it may, as is shown in Fig. 2, be provided with a turnable member 18', by the turning of which thelevel of the liquid can be adjusted. On top of the wick 16 there is located a second band 19 which consists likewise of absorbent material and which receives the moisture from the wick 16. The band 19 may be provided with a coating of leather and most of it is covered by a strip 20 of sheet metal, so that only a small longitudinal portion of the band remains exposed.

For pressing the copy sheet 28 against the moistening band, a bar 21 is provided, each end of which is secured to one end of a bell-crank lever 22, and the other ends of these levers 22 are journalled at 23 to the frame of the apparatus. 85 At the angles of these angle levers there are rollers 24 mounted so as to co-act for the purpose explained later on with cams 25 which are provided on the ilat end surfaces of the cylinder 2. A second bar, strip or rail 26 rests on the copy 90 sheet which is supported by the table plate 27, and the ends of said member 26 are secured to the bell-crank levers 29 which are adapted to turn around the pivots 30. The free arms of these angle levers 29 bear against the back of the bar 21.

The weight of the rail 26 makes it a pressure member which operates on the-entire width of the copy sheet, and the edge of said rail 26 is provided with a strip of soft material, such as felt. Instead of this rail a roller made of soft material may be used.

The cylinder 2 is rotated by means of the handle (crank) 31 and the gears 32, 33, 34. Little toothed discs 35, 36, 37 which are mounted on resilient arms are pressed against the exterior of the cylinder or the sheets thereon for the purpose of ,preventing the original sheet, the front edge of which is fastened to the cylinder, from iluttering. -A guide plate 38 made of metal sheet is secured to the frame for the purpose of guiding the copy. sheets when leaving the apparatus and for turning them over as is explained hereinafter.

`If an original sheet is to be fastened in the apparatus, the lever 13 is brought out of engagement with the underside of the eccentric 14 and the end of said lever is raised, and put on top of the eccentric 14 (Fig. 4). Thereby the top roller 8 is maintained in a position vertically spaced from the cylinder 2. Then the rail 26 is turned around the pivots 30 to the right and the bar 21 is turned around the pivots 23 to the left. When the bar 21 has reached its extreme position after having been turned to the left, it does not rest on thetable 27, there being an intermediate gap, through which the original sheet with the mirror writing can be introduced and advanced while it slides upon the table. The front edge of the original sheet is then clamped between the outer surface of the cylinder 2 and the rail 4.

By turning the handle 31 the original sheet is drawn off the table and applied to the outer surface of the cylinder. Finally the rails 21 and 26 are again brought back into the position as shown in Figs. 1 and 2 and the end of the lever 13 is laterally bent and pushed down again into the position in which the top roller is pressed `against the cylinder 2. As the original sheet need not be heldby hand during the operation of inserting it into the apparatus, it is much better protected from twisting or wrinkling and from blurring of the writing than if the upper roller were used for carrying the original sheet. lIfhe original sheet is secured in' a very simple manner. Moreover the use of the lower roller as a carrier for the original sheet affords the further advantage, that the operation of the apparatus is more convenient.

If the cylinder is turned in the direction as indicated by the arrow shown in Fig. 2, the cam 25 provided on each flat end surface of the cylinder '2 will at a determined moment engage with the roller 24 on the lever 22 (Fig. 3l, whereby the bar 21 is lifted olf the moistening member 16, 19. The levers 29 resting on the bar 21 are also simultaneously turned and thereby the rail 26 secured to these levers is lifted. In this position of the parts the copy sheet isA inserted between the rollers 2 and 8. If the handle 31 is now turned,

the cams 25 will release the rollers 24 and the rails 21 and 26 will come down again into their normal working position (Fig. 2).

The copy sheet is now advanced by the rollers 2 and 8 and it passes under the bar 21 whose weight presses the copy sheet against the moistening member 16, 19. The moistened underside of" the copy sheet comes between the rollers into intimate contact with the original sheet, whereby printing is effected. The copy sheet is during its motion pressed down by the rail 26 Ion the table 27 supporting the sheet. .Thus the soft' lining of this rail works in the manner of a smoothing brush and prevents the formation of wrinkles.

When the edge of. the copy sheet passes out of its position between the two rollers, the duplicated matter is on the underside of said copy sheet. The front edge of said copy sheet is engaged by the sheet metal guide 38.

The cross section of said guide 38 is angular and one end ofthe angle issharply inclined to the direction of movement of vthe copy sheet.

-The front edge of the copy sheet will be pushed against the upwardly extending part of the guide 38. The rear end of the sheet will be moved forwardly so that the sheet will be reversed, and

it will fall into the receptacle 39 with the printed or copied matter on the upper side of the sheet.

What I claim is:

1. Apparatus for multiplying records by drawing an original sheet and a moistened copy sheet through a pair of rollers, comprising in combination two rollers arranged one above the other, a fastening device provided on the lower roller for securing the original sheet thereto, a stationar'y moistening member, and a pressing member adapted to be liftedv and lowered and to press the copy sheet against the moistening member.

2. Apparatus for multiplying records by drawing an original sheet and a moistened copy sheet through a pair of rollers, comprising in combination two rollers arranged one above the other, a fastening device provided on the lower roller for securing the original sheet thereto, a stationary moistening member, a pressing member adapted to be lifted and lowered and to press the copy sheet against the moistening member, and a liquid container in which a part of said moistening member is located.

3. An apparatus for multiplying records by drawing an original sheet and a moistened copy sheet through a pair of rollers, comprising in combination two rollers arranged one above the other, a fastening device provided on the lower roller for securing the original sheet thereto, a stationary moistening member, a pressing member adapted to be lifted and'lowered and to press the copy sheet against the moistening member, a cam provided on the lower roller and adapted to lift up the pressing member during every complete revolution of said lower roller, and a source of supply for supplying liquid to the moistening, member. l

4. An apparatus for multiplying records by drawing an original sheet and a moistening copy sheet through a pair of rollers, comprising in combination two rollers arranged one above the other, a fastening device provided on the lower roller for securing the original sheet thereto, a

stationary moistening member, a pressing mem--b ber adapted to be lifted and lowered and to press the copy sheet against the moistening member,

a cam provided on the lower roller and adapted to lift up the pressing member during every complete revolution of said lower roller, a table supporting the copy sheet, a member adapted to be lifted up and to keep the copy sheet down on the table, and a source of supply for supplying liquid ist olution of said lower roller, a table supporting Il the copy sheet, a member adapted to be lifted up and to keep the copy sheet down on the table, and a source of supply for supplying liquid to the moisteningmember.

6. An apparatus for multiply-ing records by drawing an original sheet and a moistened sheet through a pair of rollers, comprising in combination two rollers arranged one above the other, a fastening device provided on the lower roller for securing the original sheet thereto, toothed discs secured to resilient arms and adapted to keep the original sheet on the lower roller, a stationary moistening member, a bar secured to turnable arms, said bar being adapted to rest on the copy sheet and to press it against the moistening member, a cam provided on the lower roller and adapted to lift up the bar once during every revolution of the lower roller, a table supporting the copy sheet, a member adapted to be lifted up and to keep the copy sheet down on the table, and a source of supply for supplying liquid to the moistening member.

'7. An apparatus for multiplying records by drawing an original sheet and a moistened sheet through a pair of rollers, comprising in combination two rollers arranged one above the other, a fastening device provided on the lower roller for securing the original sheet thereto, toothed discs secured to resilient arms and adapted to keep the original sheet on the lower roller, a stationary moistening member, a bar secured to turnable arms, said bar being adapted to rest on the copy sheet and to press it against the moistening member, a cam provided on the lower roller and adapted to lift up the bar once during every revolution of said lower roller, a table supporting the copy sheet, a rail adapted to be lifted up and to also keep the copy sheet down on the table, and a source of supply for supplying liquid to the moistening member.

8. An apparatus for multiplying records by drawing an original sheet and a moistened sheet through a pair of rollers, comprising in combination two rollers arranged one above the other, a fastening device provided on the lower roller for securing the original sheet thereto, toothed discs secured to resilient arms and adapted to keep the original sheet on the lower roller, a stationary moistening member, a bar secured to turnable arms, said bar being adapted to rest on the copy sheet and to press it against the moistening member, a cam provided on the lower roller and adapted to lift up the bar once during every revolution of the lower roller, a table supporting the copy sheet, a rail adapted to bev lifted up and to also keep the copy sheet down on the table, the edge of the rail which engages the copy sheetbeing covered with soft material, and a source of supply for supplying liquid to the moistening member.n

9. An apparatus for multiplying records by drawing an original sheet and a moistened sheet througha pair of rollers, comprising in combination two rollers arranged one above the other,

a fastening device provided on the lower roller for securing the original sheet thereto, toothed discs secured to resilient arms and adapted to keep the original sheet on the lower roller, a stationary moistening member, a bar secured to rotatable arms, said bar being adapted to rest on the copy sheet and to -press it against the moistening member, a cam provided on the lower roller and adapted to lift up the bar once during every revolution of the lower roller, a table supporting the copy sheet, a rail adapted to belifted up and to also keep the copy sheet down on the ltable and levers connected to the rail and adapted to be rotated at a given moment by the cam so as to lift up the rail, the edge of the rail whichvengages the copy sheet being covered with soft material, and a source of supply for supplying liquid to the moistening member.

10. An apparatus for multiplying records by drawing an original sheet and a moistened sheet through a pair of rollers, comprising in combination two rollers arranged one above the other, a fastening device provided on 'the lower roller for securing the original sheet thereto, toothed discs secured to resilient arms and adapted to keep theoriginal sheet on the lower roller, a stationary moistening member, a bar secured to turnable arms, said bar being adapted to rest on the copy sheet and to press it against the moistening member, a cam provided on the lower roller and adapted to lift up the bar once during every revolution of said lower roller, a table supporting the copy sheet, a rail adapted to be lifted up and to also keep the copy sheet down on the table, rotatable levers connected to said rail, said levers being adapted to rest on said bar so that they are lifted up together at a given moment bythe cam, the edge of the rail which engages the copy sheet being covered with soft material, and a source of supply for supplying liquid to the moistening member.

11. An apparatus for multiplying records by 4 ing member, a bar secured to turnable arms, said bar being adapted to rest on the copy sheet and to press it against the moistening member, a cam provided on the lower roller and adapted to lift up the bar once during every revolution of said lower roller, a table supporting the copy sheet, a rail adapted to be lifted up and to also keep the copy sheet down on the table, levers connected to the rail and adapted to be rotated at a given moment by the cam so as to lift up the rail, the edge of the rail which engages the copy sheet being covered with soft material, and

a source of supply for supplying liquid to the,

moistening member.

12. An apparatus for multiplying records by drawing an original sheet and a moistened sheet through a pair of rollers, comprising in combination two rollers arranged one above the other, a fastening device provided on the lower roller for the original sheet, a stationary moistening member, a bar secured to turnable arms, said bar being adapted to rest on the copy sheet and to press it against the moistening member, a cam provided on the lower roller and adapted to lift up the bar once during every revolution of said lower roller, a table supporting the copy sheet, a rail adapted to be lifted up and to also keep the copy sheet on the table, and an adjustable liquid container for supplying liquid to the moistening member.

13. An apparatus for multiplying records by drawingv an original sheet and a moistened sheet through a pair of rollers, comprising in combination two rollers, arranged one above the other, a fastening device provided on the lower roller for securing the original sheet thereto, toothed discs secured to resilient arms and adapted to keep the original sheetv on the lower roller, a stationary moistening member, a bar secured to turnable arms, said bar being adapted to rest on the copy sheet and to press-it against the moistening member, a cam provided on the lower roller and adapted to lift up the baronce during every revolution of said lower roller, a table supporting the vcopy sheet, a rail adapted to be lifted up and to tainer for supplying liquid to the mostening member, and an adjustable plunger body provided Within the liquid container.

14. An apparatus for multiplying records "by drawing an original sheet and a moistened sheet through a pair of rollers, comprising in combination two rollers arranged one above the other, a fastening device provided on the lower roller for securing the original sheet thereto, toothed discs secured to resilient arms and adapted to keep the original sheet on the lower roller, a stationary moistening member, a bar secured to turnable arms, said bar being adapted to rest on the copy sheet and to press it against the moistening member, a cam provided on the lower roller and adapted to lift up the bar once during every revolution of the lower roller, a table supporting the copy sheet, a rail adapted to be lifted up and to also keep the copy sheet down on the table, a. liquid container for supplying liquid to the moistening member, an adjustable plunger body provided within the liquid'container and movable bearings for the upper roller, an eccentric, a lever engaging. said eccentric, and means connecting said levex` and said bearing.

15. In a machine of the type described, an upper roller and a lower roller, means adapted to secure the original sheet to the lower roller, a moistening member located adjacent the lower roller, a. tank containing a supply of liquid, the lower part of said moistening member entering said tank and dipping into the liquid contained therein, the top of said moistening member being located above the level of the liquid, and means adapted to guide a sheet of copy paper over said moistening member and with the underface of said copy sheetI in contact with the top of said moistening member.

ALFRED OSER. 

